3M ROLOC sanding disc 75mm P80, bag of 10.
These sanding discs work great to take the paint off of the back of the metal, so you can use the MSD100 Dents stabilizer. To use the MSD100 at its best, you have to sand the metal on the back of the dent to bare metal. This sanding disc helps you with that. Warning, use carefully. Takes the paint from the metal completely.